Thread (3 messages) 3 messages, 2 authors, 2016-06-24

Re: [PATCH] hwrng: OMAP: Fix assumption that runtime_get_sync will always succeed

From: Nishanth Menon <nm@ti.com>
Date: 2016-06-24 16:47:29
Also in: linux-arm-kernel, linux-omap, lkml

On 06/24/2016 11:35 AM, Suman Anna wrote:
[...]
quoted
diff --git a/drivers/char/hw_random/omap-rng.c b/drivers/char/hw_random/omap-rng.c
index 8a1432e8bb80..f30a1870cb64 100644
--- a/drivers/char/hw_random/omap-rng.c
+++ b/drivers/char/hw_random/omap-rng.c
@@ -384,7 +384,11 @@ static int omap_rng_probe(struct platform_device *pdev)
 	}
 
 	pm_runtime_enable(&pdev->dev);
-	pm_runtime_get_sync(&pdev->dev);
+	ret = pm_runtime_get_sync(&pdev->dev);
+	if (ret) {
+		dev_err(&pdev->dev, "Failed to runtime_get device: %d\n", ret);
+		goto err_ioremap;
You need to also add a pm_runtime_put_noidle() on get_sync failures to
balance the device's power usage_count.
Crap, yep, I should have known better. thanks for catching it.. v2
incoming..


-- 
Regards,
Nishanth Menon
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